CGAL / cgal

The public CGAL repository, see the README below

libigl / libigl

Simple MPL-2.0-licensed C++ geometry processing library.

BrunoLevy / geogram

a programming library with geometric algorithms

hhoppe / Mesh-processing-library

C++ libraries and programs demonstrating mesh processing research published in ACM SIGGRAPH (1992-2003)

tksuoran / erhe

erhe is a C++ library and editor for 3D graphics with a graphics API abstraction loosely modeled after Vulkan and Metal, with backends for OpenGL, Metal and Vulkan

microsoft / DirectXMesh

DirectXMesh geometry processing library

MeshInspector / MeshLib

3D geometry processing SDK: fast mesh boolean, mesh repair, decimation, remeshing, offset, point cloud triangulation and ICP registration. C++ with Python, C#, C and JavaScript bindings.

chakravala / Grassmann.jl

⟨Grassmann-Clifford-Hodge⟩ differential geometric algebra